Research Article

Prevalence, Demographics, and Treatment Characteristics of Visual Impairment due to Diabetic Macular Edema in a Representative Canadian Cohort

Table 2

Disease characteristics of the populations investigated.

Control cohort
( 76,077)
Patients with type 2 diabetes on oral meds
( 6,086)
Patients with type 1 diabetes
( 2,282)
Patients with DME
( 1,316)

Overweight (BMI = 25–29.9 kg/m2) [ (%)] 3,799 (5%) 1,095* (18%) 208 (9%) 250* (19%)
Obesity (BMI ≥30 kg/m2) [ (%)]1,522 (2%) 791* (13%) 92 (4%) 158* (12%)
BMI, male (mean ± SD)25 ± 13.9 29 ± 14.0 24 ± 9 29 ± 9
BMI, female (mean ± SD) 24 ± 14.1 28 ± 14.7 26 ± 11 30 ± 7
Family history, type 2 diabetes [ (%)]782 (1%) 487* (8%) 274* (2%) 132* (10%)
Smoking [ (%)]3,804 (5%) 1,339* (22%) 416* (18%) 276* (21%)
Hypertension [ (%)]10,650 (14%) 4,138* (68%) 1,529* (67%) 868* (66%)
 Systolic blood pressure (mean ± SD)131 ± 15.4 133 ± 15.3 133 ± 14 136 ± 11
 Diastolic blood pressure (mean ± SD)77 ± 8.5 76 ± 8.5 81 ± 3 82 ± 9
Dyslipidemia [ (%)]7,603 (10%) 2,921* (48%) 251 (11%) 166* (12%)
History of impaired fasting glucose (IFG) [ (%)]0 (0%) 791* (13%) 16 (1%) 154* (12%)
History of impaired glucose tolerance (IGT) [ (%)]780 (1%) 1,095* (18%) 11 (1%) 160* (12%)
Hb1Ac (mean ± SD)5.1 ± 0.6 6.7 ± 1.8 6.5 ± 1.1 7.3 ± 1.3
History of vascular disease (coronary, cerebrovascular, or peripheral) [ (%)]9,129 (12%) 1,643* (27%)319 (14%) 368* (28%)
Acute coronary syndrome (ACS) [ , (%)]4,567 (6%) 1,947* (32%) 479* (21%) 276* (21%)
Acute
 Myocardial infarction (MI) [ (%)]799 (1%) 487* (8%) 387* (17%) 237* (18%)
 Stroke [ (%)]714 (1%) 182 (3%) 12 (1%) 91* (7%)
 Percutaneous coronary transluminal arthroplasty (PCTA)
 [ (%)]
689 (1%) 61 (1%) 25 (1%) 27 (2%)
 Coronary artery bypass graft (CABG) [ (%)]701 (1%) 65 (1%) 32 (1%) 13 (1%)
 Peripheral arterial disease (PAD) [ (%)]215 (<1%) 121 (2%) 10 (1%) 66* (5%)
 Congestive heart failure (CHF) [ (%)]755 (1%) 426* (7%) 46 (2%) 105* (8%)
 History gestational diabetes (females) [ (%)]181 (<1%) 60 (1%) 50 (2%) 26 (2%)
Chronic kidney disease [ (%)]
 Stage 1 0 (0%) 88 (1%) 12 (1%) 29 (2%)
 Stage 2 0 (0%) 92 (1%) 68 (3%) 55 (4%)
 Stage 3 737 (1%) 118 (2%) 161 (7%) 79 (6%)
 Stage 4 2,282 (3%) 212 (4%) 114 (5%) 75 (6%)
 Stage 5 (end stage renal disease)766 (1%) 109 (2%) 42 (2%) 37 (3%)
 Dialysis (<1%) 175 (3%) 37 (2%) 39 (3%)
Microvascular complications [ (%)]
 Amputations281 (1%) 177 (3%) 35 (2%) 28 (2%)
 Peripheral neuropathy741 (2%) 365 (6%) 17 (1%) 77 (6%)
 Nephropathy1,521 (2%) 28 (4%) 71 (3%) 94 (7%)

*Significantly different from control. 1-tail test. .